[sync] Abstract most ProfileSyncService //chrome deps

components/sync_driver/sync_client.h

Index: components/sync_driver/sync_client.h
diff --git a/components/sync_driver/sync_client.h b/components/sync_driver/sync_client.h
index d32b2ff21cb58d58b8726561a5910ef17dd35ab4..fda584dd0cdc6fb64ada9b97545d938096ea3d3f 100644
--- a/components/sync_driver/sync_client.h
+++ b/components/sync_driver/sync_client.h
@@ -35,6 +35,10 @@ namespace history {
 class HistoryService;
 }  // namespace history
 
+namespace invalidation {
+class InvalidationService;
+}  // namespace invalidation
+
 namespace password_manager {
 class PasswordStore;
 }  // namespace password_manager
@@ -94,6 +98,7 @@ class SyncClient {
   virtual scoped_refptr<autofill::AutofillWebDataService>
   GetWebDataService() = 0;
   virtual BookmarkUndoService* GetBookmarkUndoServiceIfExists() = 0;
+  virtual invalidation::InvalidationService* GetInvalidationService() = 0;
   virtual scoped_refptr<syncer::ExtensionsActivity> GetExtensionsActivity() = 0;
   virtual sync_sessions::SyncSessionsClient* GetSyncSessionsClient() = 0;